Governor with low droop having opposed spring
AssigneeBriggs & Stratton Corporation
InventorsGeorge P. Klonis, James J. Dehn
Life of this patent
Estimating the term…
Abstract
A governor for an engine including a speed sensor, a throttle member, a linkage, a primary spring, and a secondary spring. The speed sensor moves in response to changes in a speed of the engine. The linkage is coupled between the speed sensor and the throttle member to move the throttle member between a first position and a second position in response to the speed of the engine. The primary spring directly couples the throttle member to the engine to bias the throttle member in a first direction, and the secondary spring directly couples the throttle member to the engine to bias the throttle member in a second direction at least partially opposite to the first direction.
Claims22
A mechanical governor for an engine, the mechanical governor comprising:
- a speed sensor coupled to the engine and movable in response to changes in a speed of the engine;
- a throttle member movable between a first position and a second position;
- a linkage operably connecting the speed sensor and the throttle member to move the throttle member between the first position and the second position in response to the speed of the engine;
- a primary spring coupled between the throttle member and a first fixed portion of the engine to bias the throttle member in a first direction;
- and
- a secondary spring coupled between the throttle member and a second fixed portion of the engine to bias the throttle member in a second direction at least partially opposite to the first direction.
An internal combustion engine comprising:
- a cylinder;
- a combustion chamber;
- a piston disposed within the cylinder and reciprocal in response to combustion of a fuel in the combustion chamber;
- a speed sensor coupled to the engine and operable to generate a signal corresponding to a speed of the engine;
- a throttle member movable between a first position and a second position in response to the signal;
- a primary spring coupled to the throttle member to bias the throttle member in a first direction, the primary spring defining a primary spring rate;
- and
- a secondary spring coupled to the throttle member to bias the throttle member in a second direction at least partially opposite to the first direction, the secondary spring defining a secondary spring rate that is less than the primary spring rate.
Dependencies are inferred from the claim text.